Multiple Networks; Interactive Connectivity Establishment (Ice - Polycom RMX 1500 Administrator's Manual

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Polycom RMX 1500/2000/4000 Administrator's Guide

Multiple Networks

A more complex configuration, in which two Microsoft SIP servers are used (one Lync

Server and one Office Communications Server) is also supported using the RMX Multiple

Networks configuration.

In this configuration, each Microsoft SIP Server is defined in a Network Service of its own

(in this case two IP Network Services are defined). Only one DNS server can be used for all

the RMX Network Services, and it must be defined in one of the signaling Network Services.

One IP Network Service is defined as described for a single Network Service in the

Microsoft environment.

The second Network Service is defined without a DNS server, using the IP address of the

Microsoft SIP Server (Lync or OCS server, depending on the server defined in the first

Network Service) instead.

Figure H-1 RMX Multiple Networks Topology

ICE is not supported with this configuration.

For more details about Multiple Networks configuration, see "Multiple Network Services" on

Interactive Connectivity Establishment (ICE) provides a structure/protocol to unify the

various NAT Traversal techniques that are used to cross firewalls.

It enables SIP based endpoints to connect while traversing a variety of firewalls that may

exist between the calling endpoint (local) and the MCU or called endpoint (remote). It is the

only way for remote Microsoft Office Communicator/Lync users to call into the enterprise

without a VPN.

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